Put Theseus letter ID into tracking input instead of saving directly

backend/src/routes/admin.ts

@@ -2810,14 +2810,6 @@ admin.post("/orders/:id/theseus", async ({ params, headers, status }) => {
 
     const letter = (await theseusRes.json()) as { id: string };
 
-    await db
-      .update(shopOrdersTable)
-      .set({
-        trackingNumber: letter.id,
-        updatedAt: new Date(),
-      })
-      .where(eq(shopOrdersTable.id, orderId));
-
     return { letterId: letter.id };
   } catch (err) {
     console.error("[THESEUS] Error:", err);

frontend/src/routes/admin/orders/+page.svelte

@@ -362,9 +362,6 @@
 			});
 			const data = await response.json();
 			if (response.ok) {
-				orders = orders.map((o) =>
-					o.id === order.id ? { ...o, trackingNumber: data.letterId } : o
-				);
 				trackingInputs[order.id] = data.letterId;
 				showToast(`Theseus letter created: ${data.letterId}`, 'success');
 			} else {